The Super Bowl is where the stakes are highest in the world of professional football. But for some who have played in that big game, they have staked far more than whether or not they help hoist the Vince Lombardi Trophy — they've served in the military, signing 'a blank check to the United States of America for an amount of up to and including my life,' to paraphrase a popular quote. Here are some of the more famous names (and not-so-famous) names…